Table 2. Mössbauer Parameters upon Deconvolution of Room-Temperature Spectra of Calcined HTS Catalysts^a,^b.

sample	IS (mm s–1)	QS (mm s–1)	H (T)	Γ (mm s–1)	phase	spectral contribution (%)
HMc	0.38	–0.23	50.5†	0.23	α-Fe2O3	100
Cr-HMc	0.38	–0.21	48.5†	0.25	α-Fe2O3	100
CrCu-HMc	0.34	0.71		0.59	Fe3+ SPM	100
Al-HM	0.34	0.70		0.53	Fe3+ SPM	100
AlCu-HM	0.34	0.70		0.51	Fe3+ SPM	100
Ga-HM	0.37	–0.21	49.9†	0.26	α-Fe2O3	98
	0.34	0.87		0.50*	Fe3+ SPM	2
GaCu-HM	0.34	0.71		0.56	Fe3+ SPM	100
In-HM	0.34	0.70		0.55	Fe3+ SPM	100
InCu-HM	0.34	0.71		0.50*	Fe3+ SPM	100
Mn-HM	0.37	–0.20	48.8†	0.26	α-Fe2O3	50
	0.34	0.73		0.50*	Fe3+ SPM	50
MnCu-HM	0.37*	–0.21*	48.6	0.50*	α-Fe2O3	16
	0.34	0.71		0.50*	Fe3+ SPM	84
Zn-HM	0.38	–0.20	50.3	0.29	α-Fe2O3	42
	0.35	0.66		0.52	Fe3+ SPM	58
ZnCu-HM	0.37*	–0.21*	49.7	0.50	α-Fe2O3	8
	0.34	0.69		0.50*	Fe3+ SPM	92
Nb-HM	0.37	–0.21*	50.1	0.50*	α-Fe2O3	17
	0.34	0.73		0.50*	Fe3+ SPM	83
NbCu-HM	0.34	0.74		0.50*	Fe3+ SPM	100

^aFixed values are marked with * and average values with †.

^bExperimental uncertainties: IS ± 0.01 mm s^–1, QS ± 0.01 mm s^–1, line width: Γ ± 0.01 mm s^–1, hyperfine magnetic field: H ± 0.1 T, spectral contribution: ±3%.

^cFrom ref (6).